sqlite/ext/fts5/test/fts5trigram.test

# 2020 September 30
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#*************************************************************************
#
# Tests for the fts5 "trigram" tokenizer.
#

source [file join [file dirname [info script]] fts5_common.tcl]
ifcapable !fts5 { finish_test ; return }
set ::testprefix fts5trigram

do_execsql_test 1.0 {
  CREATE VIRTUAL TABLE t1 USING fts5(y, tokenize=trigram);
  INSERT INTO t1 VALUES('abcdefghijklm');
  INSERT INTO t1 VALUES('กรุงเทพมหานคร');
}

foreach {tn s res} {
  1 abc           "(abc)defghijklm"
  2 defgh         "abc(defgh)ijklm"
  3 abcdefghijklm "(abcdefghijklm)"
  4 กรุ            "(กรุ)งเทพมหานคร"
  5 งเทพมห        "กรุ(งเทพมห)านคร"
  6 กรุงเทพมหานคร  "(กรุงเทพมหานคร)"
  7 Abc           "(abc)defghijklm"
  8 deFgh         "abc(defgh)ijklm"
  9 aBcdefGhijKlm "(abcdefghijklm)"
} {
  do_execsql_test 1.1.$tn {
    SELECT highlight(t1, 0, '(', ')') FROM t1($s)
  } $res
}

do_execsql_test 1.2.0 {
  SELECT fts5_expr('ABCD', 'tokenize=trigram')
} {{"abc" + "bcd"}}

do_execsql_test 1.2.1 {
  SELECT * FROM t1 WHERE y LIKE ? ESCAPE 'a'
}

foreach {tn like res} {
  1 {%cDef%}   1
  2 {cDef%}    {}
  3 {%f%}      1
  4 {%f_h%}    1
  5 {%f_g%}    {}
  6 {abc%klm}  1
  7 {ABCDEFG%} 1
  8 {%รุงเ%}    2
} {
  do_execsql_test 1.3.$tn {
    SELECT rowid FROM t1 WHERE y LIKE $like
  } $res
}

#-------------------------------------------------------------------------
reset_db
do_execsql_test 2.0 {
  CREATE VIRTUAL TABLE t1 USING fts5(y, tokenize="trigram case_sensitive 1");
  INSERT INTO t1 VALUES('abcdefghijklm');
  INSERT INTO t1 VALUES('กรุงเทพมหานคร');
}

foreach {tn s res} {
  1 abc           "(abc)defghijklm"
  2 defgh         "abc(defgh)ijklm"
  3 abcdefghijklm "(abcdefghijklm)"
  4 กรุ            "(กรุ)งเทพมหานคร"
  5 งเทพมห        "กรุ(งเทพมห)านคร"
  6 กรุงเทพมหานคร  "(กรุงเทพมหานคร)"
  7 Abc           ""
  8 deFgh         ""
  9 aBcdefGhijKlm ""
} {
  do_execsql_test 2.1.$tn {
    SELECT highlight(t1, 0, '(', ')') FROM t1($s)
  } $res
}
foreach {tn like res} {
  1 {%cDef%}   1
  2 {cDef%}    {}
  3 {%f%}      1
  4 {%f_h%}    1
  5 {%f_g%}    {}
  6 {abc%klm}  1
  7 {ABCDEFG%} 1
  8 {%รุงเ%}    2
} {
  do_execsql_test 2.2.$tn {
    SELECT rowid FROM t1 WHERE y LIKE $like
  } $res
}
foreach {tn like res} {
  1 {*cdef*}     1
  2 {cdef*}      {}
  3 {*f*}        1
  4 {*f?h*}      1
  5 {*f?g*}      {}
  6 {abc*klm}    1
  7 {abcdefg*}   1
  8 {*รุงเ*}      2
  9 {abc[d]efg*} 1
 10 {abc[]d]efg*} 1
 11 {abc[^]d]efg*} {}
 12 {abc[^]XYZ]efg*} 1
} {
  do_execsql_test 2.3.$tn {
    SELECT rowid FROM t1 WHERE y GLOB $like
  } $res
}

do_execsql_test 2.3.null.1 {
  SELECT rowid FROM t1 WHERE y LIKE NULL
}

#-------------------------------------------------------------------------
reset_db
do_catchsql_test 3.1 {
  CREATE VIRTUAL TABLE ttt USING fts5(c, tokenize="trigram case_sensitive 2");
} {1 {error in tokenizer constructor}}
do_catchsql_test 3.2 {
  CREATE VIRTUAL TABLE ttt USING fts5(c, tokenize="trigram case_sensitive 11");
} {1 {error in tokenizer constructor}}
do_catchsql_test 3.3 {
  CREATE VIRTUAL TABLE ttt USING fts5(c, "tokenize=trigram case_sensitive 1");
} {0 {}}

#-------------------------------------------------------------------------
reset_db
do_execsql_test 4.0 {
  CREATE VIRTUAL TABLE t0 USING fts5(b, tokenize = "trigram");
}
do_execsql_test 4.1 {
  INSERT INTO t0 VALUES (x'000b01');
}
do_execsql_test 4.2 {
  INSERT INTO t0(t0) VALUES('integrity-check');
}

#-------------------------------------------------------------------------
reset_db
foreach_detail_mode $::testprefix {
  foreach {ci} {0 1} {
    reset_db
    do_execsql_test 5.cs=$ci.0.1 "
      CREATE VIRTUAL TABLE t1 USING fts5(
          y, tokenize=\"trigram case_sensitive $ci\", detail=%DETAIL%
      );
    "
    do_execsql_test 5.cs=$ci.0.2 {
      INSERT INTO t1 VALUES('abcdefghijklm');
      INSERT INTO t1 VALUES('กรุงเทพมหานคร');
    }

    foreach {tn like res} {
      1 {%cDef%}   1
      2 {cDef%}    {}
      3 {%f%}      1
      4 {%f_h%}    1
      5 {%f_g%}    {}
      6 {abc%klm}  1
      7 {ABCDEFG%} 1
      8 {%รุงเ%}    2
    } {
      do_execsql_test 5.cs=$ci.1.$tn {
        SELECT rowid FROM t1 WHERE y LIKE $like
      } $res
    }
  }
}

do_execsql_test 6.0 {
  CREATE VIRTUAL TABLE ci0 USING fts5(x, tokenize="trigram");
  CREATE VIRTUAL TABLE ci1 USING fts5(x, tokenize="trigram case_sensitive 1");
}

# LIKE and GLOB both work with case-insensitive tokenizers. Only GLOB works
# with case-sensitive.
do_eqp_test 6.1 {
  SELECT * FROM ci0 WHERE x LIKE ?
} {VIRTUAL TABLE INDEX 0:L0}
do_eqp_test 6.2 {
  SELECT * FROM ci0 WHERE x GLOB ?
} {VIRTUAL TABLE INDEX 0:G0}
do_eqp_test 6.3 {
  SELECT * FROM ci1 WHERE x LIKE ?
} {{SCAN ci1 VIRTUAL TABLE INDEX 0:}}
do_eqp_test 6.4 {
  SELECT * FROM ci1 WHERE x GLOB ?
} {VIRTUAL TABLE INDEX 0:G0}

finish_test